New Holland T8010 Manual page 1542

FNRP pod indicates forward OR reverse is on when Park is on
Cause:
If Park switch is off (indicating tractor is in Park) and either Forward or Reverse switch are in ON position (indicating
tractor is in Forward or Reverse) at the same time, this fault code will be generated.
Possible failure modes:
1. The transmission control (FNRP) pot failure
2. Wiring harness problem from the transmission control (FNRP) pot to the transmission controller.
Solution:
The transmission control (FNRP) pod is directly wired to the transmission controller. The transmission controller
monitors the shuttle shifting and displays the shuttle position on the instrumentation cluster.
1. Troubleshooting by viewing the shuttle position display.
In some cases, problems can be detected by viewing the display while shifting the transmission control (FNRP)
lever.
Turn Key 'ON' and watch the shuttle position display.
If Forward icon lit on display when in park and in neutral, either the Forward switch failed closed or its wiring
shorted to power.
If Reverse icon lit on display when in park and in neutral, either the Reverse switch failed closed or its wiring
shorted to power.
If the 'P' icon remains ON steady when the Forward or Reverse is selected, either the Park switch failed open or its
wiring shorted to ground.
2. Troubleshooting by checking FNRP switch function.
Disconnect the cover panel under the steering column. Locate connector C051. Measure continuities on the
transmission control (FNRP) pot side.
Measure between Pin 6 (Forward) and Pin 8 (5 Vref), there should be about 500 - 600 Ohms when in Forward
position and about 2500 - 3000 Ohms when in other positions. If not, the Forward switch failed.
Measure between Pin 5 (Reverse) and Pin 8, there should be about 500 - 600 Ohms when in Reverse position and
about 2500 - 3000 Ohms when in other positions. If not, the Reverse switch failed.
Measure between Pin 4 (Park) and Pin 3, there should be no continuity in Park position and there should be
continuity in other positions. If not, the Park switch failed.
NOTE: Park switch off indicates tractor is in Park. Park switch on indicates tractor is not in Park.
If any above switch failure is detected, replace the transmission control (FNRP) pot.
If no switch failure is detected, go to next step.
3. Check the wiring from connector C051 to the transmission controller.
Check the wiring from connector C051 to connector C351 on the transmission controller.
Follow the wiring schematics. Conduct continuity checking (in a similar way to the way specified in step 2) between
pins at each connectors.
NOTE: Pay attention to bent pin, loose pin, wire damage, and any possible shortage between pins and wires
Section 55 - Electrical System, Controller - Chapter 4
FAULT CODE TRANS 51
55-4-15